{"action":"Upgrade firefox-esr to 140.5.0esr-1 or later.","affected":[{"fixed":"140.5.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["140.5.0esr-1"],"id":"tcs_01M5NMX4CDGFM8Z194MR3S68JH","modified_at":"2026-10-24T09:47:30.953499451Z","published_at":"2025-11-11T16:15:39.097Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-13020","https://security-tracker.debian.org/tracker/CVE-2025-13020"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-13020#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-13020"}],"summary":"Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5."}